﻿using System;
using System.Collections.Generic;
using System.Text;

namespace System.Runtime.CompilerServices
{

    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class | AttributeTargets.Assembly)]

    public sealed class ExtensionAttribute : Attribute { }
}
namespace System.Web.UI
{
    public class Extension
    { }
}
namespace System.Web.UI.WebControls
{
    public class Extension
    { }
}
